Adidas, which calls Messi "the game's greatest number 10 of all time," explains the boot like this:

"The new Messi 10/10 boots include an AgilityKnit material that molds around the foot within milliseconds and eliminates any unnecessary wear in time. A PureAgility sock system delivers explosive speed and agility by hiding the laces inside the boot. The Agility SprintFrame Outsole was developed with and for Messi and generates unstoppable traction and stability. These technical features have been incorporated to represent Messi's unique playing style."